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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

5. Reasoning in Algebra and Geometry

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Exercise 37 Page 119

The sum of angles ∠ AOB, ∠ BOC and ∠ COD is equal to angle ∠ AOD.

m∠ AOD=125

Practice makes perfect

We have been asked to find m∠ AOD. The expression m∠ AOD is the angle measure between the rays OA and OD.

The sum of m∠ AOB, m∠ BOC and m∠ COD is equal to m∠ AOD. m∠ AOB+ m∠ BOC + m∠ COD= m∠ AOD

m∠ AOB+m∠ BOC + m∠ COD=m∠ AOD

SubstituteValues

Substitute values

60+ 20+45=m∠ AOD

Add terms

125=m∠ AOD

Rearrange equation

m∠ AOD= 125

Subchapter links

Lesson Check p.116

Practice and Problem-Solving Exercises p.117-119

Standardized Test Prep p.119

Mixed Review p.119